Figure 5

Microscopic examination of the proximal tumor in the stomach demonstrating typical histological findings of adenocarcinoma (A). In addition, histopathological examination of the submucosal nodule revealed GIST of the low-risk category, composed of cytologically bland spindle cells with a low mitotic index (< 5) (B). Immunohistochemistry indicated strong staining for CD34 (C) and C-kit (D), while negative results were observed for S-100 (E) and SMA (F).